New to the Marketplace is C&R Holding's Li'Messenger, a chat client for both MSN and Facebook. The app communicates directly with Windows Live servers, for a private chatting experience. The best part is that it is free of charge. And unlike many free apps, Li'Messenger is also free of advertisements.
Li'Messenger supports Multiple Points of Presence, but due to its direct line to Windows Live servers, it does not receive notifications. It will, however, run in low-power mode while your phone is in lock-screen.
You can download Li'Messenger here.
Update: We just got word that this app has to be pulled from the Marketplace, so you may want to grab it now before it's gone. We're not sure why this is...
Source: C&R Holdings